Material Analysis
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Insufficient EMA toughness with brittle fracture
Problembeschreibung
EMA product elongation at break <50% with brittle fracture without yielding
Ursachenanalyse
EMA molecular weight too low with insufficient toughness basis; excessive crosslinking losing toughness; coarse crystallization increasing brittleness
Lösung
1) Select high molecular weight EMA to improve toughness; 2) Control crosslinking degree to avoid excess; 3) Nucleating agent to refine crystallization and improve toughness
Wichtigste Erkenntnis
Insufficient toughness is caused by low molecular weight and coarse crystallization; selecting high MW is key
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